HomeEmission Control > SensorsWalker 350-34289 Oxygen Sensor - Downstream
Part #: 350-34289

Walker 350-34289 Oxygen Sensor - Downstream

Walker Products Aftermarket, Downstream
⚙️ 3 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products Aftermarket, Downstream
🚗Fitment: Saturn, Ion
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Oxygen Sensor 350-34289 for Saturn Ion

The Walker 350-34289 oxygen sensor is designed specifically for the Saturn Ion, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

  • Wiring harness length: 34.57 inches
  • Wire gauge measurement: 20 gauge
  • Heated sensor type for faster response
  • Specific fit for Saturn Ion models
  • Four-wire configuration with radiused polygon male connector
  • Thread diameter: 18.0 mm
  • Overall length: 38.11 inches
  • Threaded mounting for reliable attachment

Detailed Product Description

This Walker oxygen sensor (part number 350-34289) is engineered to meet the emission control requirements of Saturn Ion vehicles. The heated sensor design allows for quicker activation and more accurate oxygen level readings, which helps optimize fuel mixture and reduce emissions. The four-wire setup includes a 20-gauge wiring harness measuring 34.57 inches, ensuring proper connectivity and durability. The sensor’s radiused polygon male connector and 18.0 mm threaded mounting provide a secure and precise fit, tailored specifically for Saturn Ion models.

Walker Products Aftermarket offers a comprehensive line of emission control components designed to meet or exceed OEM specifications. This product line focuses on delivering reliable, vehicle-specific sensors that support emission compliance and engine efficiency. The 350-34289 oxygen sensor is part of this line, ensuring compatibility and performance for Saturn Ion owners.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper air-fuel mixture
  • Helps resolve engine performance issues related to faulty sensors
  • Reduces emissions by providing precise feedback to the engine control unit
  • Prevents check engine light triggers caused by sensor failure
  • Improves fuel economy by maintaining optimal combustion

Installation Notes and Tips

  • Ensure the vehicle is cool before sensor removal to avoid burns
  • Use appropriate tools for threaded sensor removal and installation
  • Verify connector type matches the vehicle harness (radiused polygon male)
  • Check wiring harness length (34.57 inches) for proper routing
  • Apply anti-seize compound on threads if recommended by manufacturer

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards and are tested for durability and performance. The 350-34289 sensor is designed for long service life and reliable operation in Saturn Ion vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandWalker
Part Number350-34289
PositionWalker Products Aftermarket, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length38.11
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length34.57

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2004SaturnIon2.2LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2004SaturnIon2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2003SaturnIon2.2LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.